Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Heavy Rain Fog/Mist

78°F

26°C

Humidity 93%
Wind Speed N 18 G 26 mph
Barometer 29.62 in (1002.2 mb)
Dewpoint 76°F (24°C)
Visibility 2.50 mi
Heat Index81°F (27°C)
Last update 13 Apr 3:54 am ChST
Extended Forecast for

Agat GU

Typhoon Watch until further notice
Tropical Storm Warning until further notice
Coastal Flood Watch April 13, 06:00am until April 15, 04:00pm
Flood Watch April 13, 04:00am until April 15, 10:00am
High Surf Warning April 13, 04:00am until April 16, 06:00pm
Click here for hazard details and duration
Typhoon Watch until further notice
Tropical Storm Warning until further notice
Coastal Flood Watch
Flood Watch
High Surf Warning
  •  
    Typhoon Watch until further notice
    Tropical Storm Warning until further notice
    Flood Watch April 13, 04:00am until April 15, 10:00am
    High Surf Warning April 13, 04:00am until April 16, 06:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 78 °F

    Scattered
    Showers and
    Windy

  • Monday

    Monday: Scattered showers and thunderstorms.  Mostly cloudy, with a high near 84. Windy, with a north wind 30 to 39 mph, with gusts as high as 55 mph.  Chance of precipitation is 50%.

    High: 84 °F

    Scattered
    Showers and
    Windy

  • Monday Night

    Monday Night: Scattered showers and thunderstorms.  Mostly cloudy, with a low around 79. Windy, with a north northwest wind 36 to 44 mph, with gusts as high as 55 mph.  Chance of precipitation is 50%.

    Low: 79 °F

    Scattered
    Showers and
    Windy

  • Tuesday

    Tuesday: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 11am. Some of the storms could produce heavy rainfall.  Cloudy, with a high near 83. Windy, with a west northwest wind 44 to 50 mph, with gusts as high as 70 mph.  Chance of precipitation is 70%.

    High: 83 °F

    Heavy Rain
    and Windy

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 7pm, then scattered showers and thunderstorms after 7pm. Some of the storms could produce heavy rainfall.  Mostly cloudy, with a low around 79. Windy, with a west southwest wind 44 to 50 mph, with gusts as high as 70 mph.  Chance of precipitation is 70%.

    Low: 79 °F

    Heavy Rain
    and Windy

  • Wednesday

    Wednesday: Scattered showers and thunderstorms.  Mostly cloudy, with a high near 84. Windy.  Chance of precipitation is 50%.

    High: 84 °F

    Scattered
    Showers and
    Windy

  • Wednesday Night

    Wednesday Night: Scattered showers and thunderstorms.  Mostly cloudy, with a low around 79. Windy.  Chance of precipitation is 50%.

    Low: 79 °F

    Scattered
    Showers and
    Windy

  • Thursday

    Thursday: Scattered showers and thunderstorms before 11am.  Partly sunny, with a high near 85. Windy.

    High: 85 °F

    Scattered
    Showers and
    Windy then
    Partly Sunny
    and Breezy

Detailed Forecast

Overnight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 78. Windy, with a north wind around 30 mph, with gusts as high as 39 mph. Chance of precipitation is 50%.
Monday
Scattered showers and thunderstorms. Mostly cloudy, with a high near 84. Windy, with a north wind 30 to 39 mph, with gusts as high as 55 mph. Chance of precipitation is 50%.
Monday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 79. Windy, with a north northwest wind 36 to 44 mph, with gusts as high as 55 mph. Chance of precipitation is 50%.
Tuesday
Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 11am. Some of the storms could produce heavy rainfall. Cloudy, with a high near 83. Windy, with a west northwest wind 44 to 50 mph, with gusts as high as 70 mph. Chance of precipitation is 70%.
Tuesday Night
Showers likely and possibly a thunderstorm before 7pm, then scattered showers and thunderstorms after 7pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 79. Windy, with a west southwest wind 44 to 50 mph, with gusts as high as 70 mph. Chance of precipitation is 70%.
Wednesday
Scattered showers and thunderstorms. Mostly cloudy, with a high near 84. Windy. Chance of precipitation is 50%.
Wednesday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 79. Windy. Chance of precipitation is 50%.
Thursday
Scattered showers and thunderstorms before 11am. Partly sunny, with a high near 85. Windy.
Thursday Night
Partly cloudy, with a low around 78. Breezy.
Friday
Mostly sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 79.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 79.
Sunday
Mostly sunny, with a high near 84.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Agat GU
 13.38°N 144.67°E
6:08 pm ChST Apr 12, 2026
4am ChST Apr 13, 2026-6pm ChST Apr 19, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database